Directional Tread Design. Designed for those cold wet morning drives, the directional tread design forces the water between the grooves. Water is quickly channeled away from the tyre surface, reducing the risk of aquaplaning.Benefits Reduced risk of aquaplaning.

Consumer benefits:

Better cornering in both wet and dry conditions

Excellent grip on snow

Very good wear resistance

Run on flat

Excellent grip and control at high speeds on all surfaces

Enhanced snow and ice traction. The unique tread design puts a high number of biting edges in contact with the road, giving you enhanced traction on snow and ice. Deep snow notches grab onto the surface, adding extra grip when accelerating, braking and hill climbing.

Exceptional performance on winter roads. The SP Winter Sport 4D provides exceptional winter handling and braking ability for high performance cars. Combining a unique tread design with high grip materials, it is designed to deliver optimal control on snow, ice, wet and dry surfaces.

Control and grip in wet conditions. For days when roads are wet or thawing, the SP Winter Sport 4D features directional grooves designed to evacuate water quickly and prevent aquaplaning. The high grip compound is optimised to deliver shorter braking distances on wet roads.

Specific bead seat system. Strengthens the link between tyre and rim for a more precise driving experience. Like the grip between your hand and the steering wheel, the Specific Bead Seat System enhances control and conveys outstanding road feedback.Benefits Enhanced road feedback; greater stability and precision.

Silica-Plus Compound. A motorsport derived tread compound that delivers high levels of grip, particularly on wet roads and in low temperatures.Benefits Superb braking and acceleration performance; high grip in wet and cold-weather conditions; low wear and tear.

Maximum Flange Shield (MFS). A rim flange protection system. MFS employs a profile of rubber that runs around the circumference of the tyre above the wheel flange. This creates a protective buffer zone.* Benefits Protects expensive alloy wheels from kerbing.* Only available in select sizes

4D Sipe System. The 4D Sipe system sees the tread separated into a number of blocks that increase friction and stability during cornering. The system delivers superb lateral grip in snow.Benefits Superb cornering, even in snow.

Multi Blade System. Winter driving conditions can vary greatly. From cold and dry to snow or sleet, these conditions make very high demands on a tyre. Dunlop’s multiple blade system meets this challenge head on, with different types of blades for varying winter road conditions. Benefits Consistent performance in various winter conditions.

Multi Radius Tread (MRT). MRT designs employ ten different radii and are therefore more precise. This results in highly effective pressure deployment on the road contact patch. The effect is smoother transitions from straight to corner, leading to more precise and progressive reactions.Benefits Significantly better control over the evolution of the footprint in all driving conditions; responsive wet and dry handling; increased cornering control.

Foam-in-Tyre Technology (FIT)

Car interior noise has 3 main causes:

Wind noise (created by air-flow at high speed)

Engine noise

Tyre noise:

Tread/block road rumble. “Airpumping” also known as “groove resonance” , where the grooves are compressed and then released again. (Structural) Vibrations of the tyre/carcass.

Foamin Tyre(FIT) Tyre noise

'Why Foam-in-Tyre?'

Tyre noise is mainly transmitted by:

Airborne noise: Noise waves transmitted through air

Body noise: Transmission by vehicle suspension

One of the biggest noise sources, is the so-called Cavity Resonance which is transmitted into the car as body noise because of the axle construction.

Foamin Tyre (FIT) Technology

'How does Foamin Tyre work'

Technology:

Once the tyre has been heated, a foam strip is fitted to the inner liner. This reduces tyre (carcass) noise considerably.

Principle of operation:

Elimination of resonance peaks.

Effect:

Reduction of interior car noise by a number of dB, to half of the tyre noise.

Advantages:

Relatively cost efficient

Stable through the full life of the tyre

Light enough not to influence running performance, roll resistance or high speed efficiency

Currently available in Summer and Winter, also as All Season and ROF later.

Can be repaired

Effect of the tyre on noise perception

Sounds are transmitted by 2 main mechanisms: By air movement (Air resonance): The air molecules are stimulated to vibrate (wave form).

By structural resonance (Body resonance): Vibrations are transmitted by the vehicle structure.

A large part of inerior car noise is due to resonance caused by vibration of the tyres. This is transmitted to the inside of the car via the structure (body resonance). Counter measures taken at noise source, in this case, at the tyre, are easier and more effective than they would be at other car components, e.g. at the drive train or the body.

The solution

How can the vibrations in the tyres be reduced? Fitting a foam strip to the inner liner of the tyre helps to markedly reduce the tyre (carcass) noise. Reduced resonance in peak range by up to 11dB(A) This makes a reduction of interior car noise of up to 3 - 4dB(A), possible. This means that it is only half as loud in the car as it would have been with normal tyres.

EU Tyre Label and Efficiency Classes

The European Union, under CE 1222/2009, has mandated that all tyres manufactured after the date of July 1 2012 for cars and commercial vehicles include standard EU Tyre Labels classifying them by three performance characteristics:fuel efficiency classified from A to G,wet grip classified from A to G, and noise emission in decibels.

Categories of tyres unaffected by this regulation include: retreaded tyres, professional off-road tyres, racing/sports car tyres, as well as certain types of tyres designed to improve traction such as studded tyres, T-type temporary spare tyres, tyres for cars built before 1990, tyres with a maximum allowed speed of 80km/h, tyres for rims with a diameter less or equal to 254 mm or greater or equal to 635 mm.This label is intended on one hand to promote economic and ecological efficiency in traffic, as well as increase road safety, and on the other hand to help consumers select appropriate tyres by ensuring a certain degree of product transparency.

Nevertheless, the label has been criticized for only showing a very limited number of characteristics. Professionals argue that tyres have many more features that are important and relevant to road safety, including but not limited to aquaplaning properties, driving stability, service life, product properties on wet and dry roads other than wet grip, properties on snow. Tyre manufacturers suggest that the test results from various institutions and industry magazines should remain a very important source of information for the end consumer, because they focus on and rate a wide variety of tyre properties and features.

*Prices include VAT and delivery within Ireland.

**More than 90% of our orders reach the customer in the specified delivery time.

Tyre size:

What tyre size do you require? The exact size of a tyre can be found on its sidewall. The following chart shows you how to read a tyre size.